Concrete building-block.



No- 828,993. PATBNTEDAUG. 21, 1906.

D. J. AMES. CONCRETE BUILDING BLOCK.

APPLXGATIOK FILED HOV. 3.1905

Zflz'izwsses. Inwmfor 22 dfi rnaya. 25 M anw w g fl UNITED STATES PATENT OFFICE.

CONCRETE BulLDlNG -BLOCK.

Specification of Letters Patent.

]?atented. Aug. 21, 1906'.

Application filed November 3, 1905. SerlalNo. 286.759.

To all whom it may concern:

Be it known that I, DAVID J. AMEs, a citizen of the United States, residing at Minnea olis, in the county of Hennepin and State oiMinnesota, have invented certain new and useful Improvements in Concrete Building- Blocks ;and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable 0th in the art to which it appertains to make and use the same.

My invention relates to the constructionof concrete building-blocks, and has for its object to improve the same in the several particulars hereinafter noted.

The invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The especial object of my invention isto provide an improved block whereby a wall constructed therefrom will have a continuous air-space and in which the inner and outer portions of the wall are connected or tied together by bonds that will not conduct frost ormoisture from the outer to the inner face of the wall. In accomplishing this result I provide blocks which in themselves are preferably solid, but thin as compared with the wall to be built thereof, and which are rovided with metal bonds part1 1 cast or em edded therein and so located t at the bonds of the blocks of the outer portion of the wall will come between the abutting ends of the blocks of the inner portion of the wall, or vice versa.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a lan view showing a portion of a wall constructed of my im roved blocks. Fig. 2 is a transverse vertica section taken on the line m 032 of Fig. 1, and Pi 3 is a perspective view showin one of the eeks looking at the in ner sur ace thereof. The concrete blocks 1, which are to form the outer portion of the wall, may be made 'rough, in imitation of broken stone, or may be made smooth, in imitation of dressed stone, or may, in fact, be given an desired finish, either plain or ornamental. he faces of the blocks 1, which form the inner ortion of the wall, will of course usually be le t plain and'without any special care to finish, although this is optional.

The metallic bonds are preferably in the ers skilled form of strong wire loops 2, that are bent a proximately to rectangular form. The on s of the rectangular loops 2 are embedded in the central portions of the blocks 1 in therocess of construction of the said blocks. When the block has hardened, it is evident that the said loops or rectangular bonds will be ri idly secured to the respective blocks, and t e bodies thereof will proect in vertical planes at a right angle to the block.

As shown, the inner surfaces of the blocks 1 are recessed at 3 to reduce the amount of material of the said blocks and to increase the air-space between the inner and outer portions of the wall. This will usually be desirable when a heavy or thick wall is to be constructed, but when a thin or narrow wall is to be constructed by the use of these blocks the blocks will usually be formed with fiat inner surfaces.

In the construction of the wall the loops or rectangular bonds 2 of the blocks which form the outer portion of the wall are inserted be-' tween the ends of the blocks which make up the inner portion of the wall, and, on the other hand, the loops or bonds 2 of the blocks that make u the inner portion of the wall are inserted etween the ends of the blocks that make up the outer portion of the wall. In both instances the said bonds are embedded in the cement which is placed between the abutting ends and between the ends of the abutting blocks, so that when the cement hardens said metal bonds are caused to rigidly unite the inner and outer portions of the wall. This arrangement wherein the rectangular metal loops or bonds 2 are primarily embedded both in the blocks of the inner and outer ortion of the wall is the best construction} ut in many applied only to the one class of blocks-as,for instance, to the blocks which form the outer portion of the wall. It is of course evident that the said bonds should be applied to the central portion of the respective blocks, so that they will come between the ends of the abutting blocks of the other portion of the wall when the blocks of the inner and outer portion of the wall is set to form la ped joints with res eat to each other. It is a so evident that wit the loops or bonds arranged to be embedded between the ends of the abutting instances the said bonds will be abuttin blocks. The said bonds being cone structer of wire or other thin metal tend to separate the abutting blocks no farther than would be otherwise desirable in order to make.

roper room for the interposed cement. The Bonds in the form of loops afford convenient hand ieces by means of which the blocks may be carried, and this makes the handling of the blocks a comparatively easy matter.

What I claim, and desire to secure by Let ters Patent of the United States, is as follows: 1. A concrete block having at one side a metal bond partly embedded therein and projecting materially beyond all portions of that side of said block, the arrangement being such that a wall may be constructed from said blocks, with the blocks laid in two laterallyspaced vertical courses, and with the bonds of t e blocks of the one vertical course interposed in the joints between the blocks-0f the other vertical course, substantially as described.

2. A wall made up of blocks laid in two vertical courses, leaving an air-pace'between the inner and outer ortions of the wall, and metal bonds embed ed in the blocks of the one vertical layer and interposed in the 'oints between blocks of the other vertical layer, substantially as described.

3. A wall made up of blocks laid in two vertical courses, leaving an air-space between the inner and outer portions of the wall, the horizontally-alined inner and outer blocks havin their joints lapped, and metal bonds embe ded in the intermediate portions of the blocks of the one vertical layer and interposed between the abutting ends of blocks of the other vertical la *er and held by cement inter osed between the said abuttin ends of the blocks, substantially as describe 4. A wall made up of blocks laid in two vertical courses, leaving an air-space between the inner and outer portions of the wall, the

horizontally-alined inner and outer blocks having their joints lapped, and yoke-like metal bonds having their ends embedded in the intermediate portions of the blocks of the one vertical layer, and having their project ing portions interposed between the abutting ends of blocks of the other vertical layer, sub stantially as described.

In testimony whereof'I afiix my signature in presence of two witnesses.

DAVID J. AMES. Witnesses:

MALIE HOEL, F, D. MERCHANT. 

